Tempering apparatus.



PATENTED AUG. 25, 1903.

A. M. CHASE. TEMPERING APPARATUS. APPLICATION FILED MAR], 1899.

B SHEETSSHEBT 1.

N0 MODEL.

ATTORNEYS m vsmovs. PATENTED AUG. 25,1903;

A. M. CHASE.

TBMPERING APPARATUS. APPLICATION FILED MAR: 7, 1899. N0 MODEL. 1 aSHEETS-SHEBT 2.

A. M. C HASEQ TBMPERING APPARATUS.

APPLICATION FILED MAR. 7. 1899. I

NO MODEL.

INVENTOR ATTORNEYS No. 737,079 I 'PATBNTED AUG. 25, 1903.

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737,079. PATENTED AUG. 25, 1903;

A. M. GHA$E. A TEMPBRI'NG APPARATUS.

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g A I k I w @AAAAAA l M l M M 1 H! L 7 a x x x ATTORNEYS No. 787,079.PATENTED AUG. 25, 1903.

A. M. CHASE.

TEMPERING APPARATUS.

APPLIOATION FILED MAR. 7, 1899.

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APPLICATION FILED MAR. 7, 1899. N0 MODEL.

PATENTED AUG. 25, 1903.

8 SHEETS-SHEET 6.

' BY I ATTORNEYS No.'737,079. PATENTED AUG. 25, 1903.

A. M. CHASE. TEMPERING APPARATUS.

APPLICATION FILED MAR. 7, 1899.

N0 MODEL. 8 SHEETS-SHEET '7.

ATTO R N EYS Nb..737,079. PATENTED AUG. :25, 1903. A, M. CHASE. v

TBMPERIN'G APPARATUS.

APPLICATION FILED MAR. 7, 1898.

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ATENT Patented August 25, 18:03.

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AURIN M. CHASE, F SYRACUSE, NEYV YORK.

"i'i-ZMPEFHNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 737,079, dated August25, 1903. Application filed March 7, 12399. flerial No."708,071. (Nomodel.)

To all whom it may concern:

Be it known that I, AURIN M. CHASE, of Syracuse, in the county ofOnondaga, in the State of New York, have invented a new and useful'lempering Apparatus, of which the tollowing is a specification.

My invention has for its objectthe production of a tempering apparatuswhich requires a minimum amount of space and enables the user totemper-with great uniformityg'and to this end it consists in thecombination, construction, and arrangement of the component parts of atempering apparatus, as hereinafter fully described, and pointed out inthe claims.

In describing this invention reference is had to the accompanyingdrawings, forming part'of this specification, in which like lettersindicate corresponding parts in all the views.

Figure 1 is a top plan view of my tempering apparatus. Fig. 2 is anisometric view of the detached receptacle for the tempering is a topplan view, partly broken away, of said receptacle. Figs. 4, 5, and arevertical sectional views taken, re-

. spectively, on lines 4: 4, 5 5, and 6 6, Fig. 3.

Fig. 7 is a top plan view ofa modified construction of receptacle forthe tempering fluid. Fig.8 is a vertical sectional view of a modifiedconstruction of my invention.

It is well known to' those skilled in the artthat it is exceedinglydifficult even for workmen of the greatest skill and expertness tosecure uniform results in successively tempering a number of articles,for the reason that the fluid in which the articles are inselted whenbeing tempered absorbs heat from said articles and is gradually heated,thus necessitating heating of most of the articles to variabletemperatures and to higher temperatures than would be required if thetemperature of the tempering fluid remained substantially constant..Indeed the securement of uniform results in tempering is so dillicultthat in practice a considerable portionof a number of articlessuccessively tempered by even expert and skilled laborers must beretempered, thus necessitating reheating of the metal and additionallabor and expense and causing the metal to become less suitable for thedesired purpose. it is also well known that with a view of securinguniform results in tempering and requiring less heating of the articlesto be tempered it is customary to place ice within the tempering fluidand to also employ a number of tanks or other receptacles for saidfluid. When ice is used, the composition of the temperingfluid iscontinually varied as the ice melts and/uniformity in tempering results.Moreover, if ice is used, even in large quantities,

the temperature remains constant only for a' comparatively short time.The use of a plurality of tanks or receptacles containing temperingfluid also fails to aid materially in eifecting uniform tempering, sincethe temperature of the fluid in the respective tanks or receptacles ismore or less variable and rises quickly as soon as tempering iscommenced. Moreover, considerable space is occupied by the various tanksor rceptacles,

and the means for supporting the articles to be tempered must be capableof use at several points, or means must be provided for conducting thetempering fluid from one tank or receptacle to another, which would notbe necessary'were a single tank or receptacle sufiicient. I

My apparatus is of such construction that but one, tank orreceptacle-for receiving the articles to be tempered is required, andthe tempering fluid is. maintained substantially uniform in'compositionand temperature.

My tempering apparatus preferably consists of a receptacle for receivingthe tempering fluid and the article to be tempered and a refrigeratingmechanism provided with a conduit arrangedin the receptacle and meansfor passing a refrigerating fluid through the conduit. Said receptaclemay consist of'asingle chamber, but as usually constructed iscomposed'of chambers A B,

arranged side by side and communicating formed in the upper portion ofone of the sides a arranged at an angle with the side a and is providedwith a screen a for pre Said branch 1) extends along the side 0t of thechamber A, provided with the on t-let-opening a and communicates withsaid opening. The passage b may be formed by any suitable means and ishere illustrated as inclosed by a series of partitions b", extendingfromone wall of the chamber B toward the opposite wall of said chamber, andan additional partition b alternatingxwith the partitions b andextending from said opposite wall of the chamber B toward the wall ofsaid chamber from which the partitions 12 project.

I usually provide my tempering apparatus with a. suitable device, as a.revoluble propellenwheel O, for elfecting a positive circuiation of'thetempering fluid fromthe outletopening a through the branch I) and thepassage b' to the inlet-opening a. This propeller wheel 0 is generallyarranged in the branch -b in an opening in a crosswise" partition insaid branch and is revolved by any suitable means, as a pulley 0,arranged at the exterior of the branch 1).. The circulation of thetempering finid between the chamber for re ceiving the article to betempered and the chamber for cooling the heated tempering fluid mayobviously be effected by any other suitable means, as illustrated inFig. 8, in which figure I have shown a chamber A for receiving-thearticle to be tempered, a chamber B arranged beneath the chamber A forreceiving the heated tempering fluid, refrigerating-conduits D similarto the conduits D presently described, conduits b b, opening, respectively, from the chambers A B and discharging, respectively, into thechambers B 'A and a. pump 19 for effect-- ing the passage of the cooledtempering fluid from the chamber B The refrigerating mechanism of mytempering apparatus may be of any desirable form,

size, and construction and is herev shown as consisting ofa compressoror pump D, a condenser D, a receiver D expansion refrigerating-onduits Dand suitable connections between the compressor or pump, condenser,receiver, and" conduits for circulating an ex pansible refrigeratingfluid through said conduits. The construction of the compressor or pumpD, condenser D, receiver D and the connections between said parts formsno feature of my present invention, and consequently it is unnecessaryto describe the same: Said conduits D are preferably arranged in thepath of the tempering fluid in the chamber B, being here shown assupported within the branches of the tortuous passage b", as bestexterior of the refrigeratirig-conduits.

that the cond uit for the refrigerating medium is located wholly withoutsaid pool.

In the operation of my tempering apparatus the refrigeratingmechanismconstantly or intermittentlymaintains a lower temperature Within therefrigerating-conduits than that of the fluid circulating around saidconduits. The temperature of said fluid is thus reduced, and, ifdesired,iceis formed upon the The cooled tempering fluid is admitted to thelower portion of the chamber for receiving the article to be-tempe edand is withdrawn from the top of said chamber and again. passed throughthe chamber containing the refrigerating-conduits. The tempering fluidwithin the chamber for receiving the article to be tempered may thus bemaintained at any desired temperature, and consequently the user -of myapparatus maytemper uniformly.

The construction and operation of my invention will now be readilyunderstood upon reference to the foregoing description. and theaccompanying drawings, and it will be particularly noted that myinvention is not limited to any exact construction of refriger.

ating mechanism.

Having thus fully described my invention, what I claim as new, anddesire tosecure by Letters Patent, isl 1. In an apparatus for temperingmetallic articles, the combination of a receptacle for receiving thetempering fluid, a tempering pool in open communication with the fluidin said receptacle, an expansion refrigeratingconduit within thereceptacle, and means for circulating an expansible refrigerating fluidthrough said conduit, substantially as and for the purpose described.

2. In an apparatus for tempering metallic articles,'the combinationof anopen unobstructed chamber for receivingthe tempering fluid and thearticle to be tempered, a second chamber communicating with thefirstchamber forsupply'ing thetempering fluid thereto,

whereby a temperingpool is provided'ywithin the receptaclepan expansionrefrigeratingconduit within the second chamber, and means forcirculating an expansible refrigerating fluid through said conduit,substantially as and for the purpose specified.

3. In an apparatus for tempering metallic articles, the combination of achamber for receiving the tempering fluid and the article to betempered, a second chamberpommunh the tempering fluid thereto, a screenfor preventing the escape of scale from the first chamber to the secondchamber, an expansion refrigerating-conduit within the second chamber,and means for circulating an cxpansible refrigerating fluid through saidconduit, substantially as and for the purpose described.

5. In an apparatus for tempering metallic articles, the combination of achamber for receiving the tempering fluid and the article to betempered, a second chamber for supplying-the tempering fluid to thefirst chamber, means for causing a circulation of said fluid, saidsecond'chamber being arranged at one side of the first chamber andhaving its side nearest to the first chamber connected to the adjacentside of said first chamber and provided with a lateral branch extendingalong the first chamber and connected to the contiguous side thereof,said first named I chamber providing an unobstructed pool for thereception of the article to be tempered, anexpansionrefrigerating-conduit within the second chamber, and means forcirculating an expansible refrigerating fluid through said conduit,substantially as and for the purpose specified.

6. In an apparatus for tempering metallic,

articles, in combination, a tempering-pool, a circulating medium formaintaining said pool, and a refrigerating mechanism provided with aconduit arranged in the body of said circulating medium, said conduitbeing located wholly without said pool, substantially as described.

7, In an apparatus for tempering metallic articles,the combination of atempering-pool,

for receiving the articles, provided by one chamber, a second chamber inopen communication with the first chamber for supplying the temperingfluid thereto, said second chamber being provided with a tortuouspassage for the tempering fluid, expansion refrigerating-conduitsarranged in the branches of the tortuous passage of the second chamber,and means for circulating an expansible refrigerating fluid through saidconduit, substantially as and for the purpose described.

8. The combination or a chamber for receiving the tempering fluid and.the article to be tempered, a second chamber communicating with thefirst chamber for supplying the tempering fluidthereto, said secondchamber being provided with partitions extending from one wall thereoftoward its opposite wall, an additional partition alternating with v thefirst partitions and extending from said opposite wall toward the firstwall, said partitions forming a tortuous passage for the temperingfluid, expansion refrigerating-conduits arranged between the partitionsof the second chamber, and means for circulating an expansiblerefrigerating fluid through said conduits, substantially as and for thepur- 9. The combination of a chamber for re ceiving the tempering fluidand the article to be tempered, a second chamber communicating with thefirst chamber for supplying the tempering fluid thereto, means forcausing the circulation of'said fluid, an expansion 7refrigerating-conduit within the second chamber, and means formaintaining a coatingpf ice on the outer surface of said conduit dun"ing the use of the first chamber, substan tially as and .for the purposespecified.

In testimony whereof I have hereunto signed my name, in the presence oftwo at testing Witnesses, at Boston, in the county of Suffolk, in theState of Massachusetts, this 5th day of January, 1899.

AURIN M. CHASE.

Witnesses:

'ALPHEUS SANFORD, v

MARTIN J. GILMARTIN.

